Ordering number : EN6202A
Monolithic Digital IC
2-phase Brushless
LB1868
Fan Motor Driver
Overview
The LB1868 is a 2-phase unipolar brushless motor driver. With only a few peripheral parts, lockup protection and
automatic recovery can be implemented. The IC can be configured for 12V or 24V operation and a wide range of variations,
from Low speed to H-High speed and from 60cm to 120cm square using the same PCB. This makes it easy to design highly
reliable fan motor installations.
Features
• Output protection Zener diode with variable withstand voltage
Z1, Z2 pins open: V LM = 57V (24V specification)
O
Z1, Z2 pins shorted: V LM = 32V (12V specification)
O
External Zener diode connected across Z1 − V
pins: support for fans with large drive current
CC
• External resistor allows configuration for 12V or 24V
• Direct Hall element connection possible (built-in Hall amplifier with hysteresis supports core without auxiliary electrode)
• Built-in output transistor with 1.0A output current (strengthened negative-current support for core without auxiliary electrode)
• Built-in rotation detection function: Low during rotation and High during stop
• Built-in lockup protection with automatic recovery
• Built-in thermal shutdown
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
max
Conditions
Ratings
Unit
mA
V
Maximum input current
I
t ≤ 20ms
200
Internal
1.0
CC
Maximum applied output voltage
Maximum output current
V
I
max
OUT
max
A
OUT
Maximum current flowing into RD pin
Maximum RD applied voltage
Allowable power dissipation
Operating temperature
I
max
10
mA
V
RD
V
max
30
RD
Pd max
Topr
1.1
W
-30 to +95
-55 to +150
°C
°C
Storage temperature
Tstg
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer
's products or
equipment.
31109 MS 20080725-S00003 / 83100RM(KI) No.6202-1/5